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相关概念视频

Cerebrum: Anatomical Overview II01:11

Cerebrum: Anatomical Overview II

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Each cerebral hemisphere can be divided into three main regions. The outermost region, the cerebral cortex, is a thin layer (2 to 4 millimeters thick) made up of gray matter, consisting of neuron cell bodies, dendrites, glial cells, and blood vessels. The middle region, or white matter, is primarily composed of myelinated nerve fibers organized into three types of large tracts: association fibers, commissures, and projection fibers. Association fibers connect different areas within the same...
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相关实验视频

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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
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考虑到双层环状皮质,使用扩散权重的核磁共振成像 (MRI) 来考虑环状皮质捆的连接性.

Sang-Han Choi1, Gangwon Jeong2, Young-Eun Hwang3

  • 1Neuroscience Convergence Center, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.

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概括
此摘要是机器生成的。

这项研究揭示了带膜束 (CB) 白质通路内的双层结构. 这一发现为了解大脑连接和带状皮层提供了一个精细的模型.

关键词:
结结束束的束.双层环状皮质是双层的环状皮质.一个叫做"Paracingulate Sulcus"的人.曲谱学 曲谱学 曲谱学 曲谱学

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相关实验视频

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科学领域:

  • 神经科学是一个神经科学.
  • 神经成像是一种神经成像.
  • 人类解剖学 人类解剖学

背景情况:

  • 带膜束 (CB) 是一个关键的白质通道,传统上被视为围绕带膜皮层的单一结构.
  • 带带皮质本身表现出功能和细胞学分类 (前部,中部,后部) 并可以在解剖学上分为内部和外部层.
  • 了解CB的精确架构对于破译其在认知功能中的作用及其与大脑皮层的连接至关重要.

研究的目的:

  • 通过考虑最近发现的带膜皮层的双层结构来研究带膜束 (CB) 的详细路径.
  • 开发一种新的CB连接模型,以解释其双层解剖学.
  • 为了更有组织地了解CB的功能及其与大脑皮层的关系.

主要方法:

  • 利用了来自人类结合体项目的7.0T扩散权重磁共振 (MR) 成像数据 (n=32).
  • 采用FreeSurfer软件,用于将解剖学MR图像自动分为皮层子部分.
  • 应用MRtrix软件用于纤维跟踪和提取,这些纤维来自带状白质 (CWM) 内层和外层的种子位置.

主要成果:

  • 在46.5%的背冠状部分中确定了双层环状皮质,在外层具有显著的个体变异性.
  • 纤维跟踪揭示了不同的途径:内层CB连接前脑和后脑区域,而外层CB连接到上脑区域.
  • 基于带状白质的内外层,证明了差异性的连接模式.

结论:

  • 带束表现出比以前理解的更复杂,双层结构.
  • 这种双层解剖结构支持CB内的独特的功能连接途径,连接不同的皮层和皮下区域.
  • 提出了一种新的CB连接模型,该模型包含双层环状皮质,提高我们对大脑组织和功能的理解.